 | | Journal (article/letter/editorial) | | 717–738 The Bisha Volcanic-Associated Massive Sulfide Deposit, Western Nakfa Terrane, Eritrea C. TUCKER...Alberta, Canada T2G 0V2 Abstract The Neoproterozoic Bisha volcanic-associated massive sulfide deposit (VMS)...in a newly discovered VMS district in western Eritrea. The host stratigraphic section comprises a large...possibly coeval and cogenetic intrusion known as the Bisha Gabbroic Complex, ~3 km downsection, a series of...Two other VMS deposits are present along strike: Bisha Northwest, 1.5 km to the north-northwest, and Harena |  | Zhao, Kai, Yao, Huazhou, Wang, Jianxiong, Ghebretnsae, Ghebsha Fitwi, Xiang, Wenshuai, Xiong, Yi-Qu (2019) Genesis of the Koka Gold Deposit in Northwest Eritrea, NE Africa: Constraints from Fluid Inclusions and C–H–O–S Isotopes. Minerals, 9 (4) 201 doi:10.3390/min9040201 | Journal (article/letter/editorial) | | Genesis of the Koka Gold Deposit in Northwest Eritrea, NE Africa: Constraints from Fluid Inclusions and...Nakfa terrane and the Adobha Abiy terrane, NW Eritrea. Based on a paragenetic study, two main stages...deposit: (1) an early stage of pyrite–chalcopyrite– sphalerite–galena–gold–quartz vein; and (2) a second stage...vein-hosted gold ± sulfide deposits and occurrences in Eritrea are concentrated along NNW- and NNE-trending narrow...the Asmara-Nakfa Belt (ANB). Both the world class Bisha VMS and Koka gold deposits are located in the AAB |  | | Book | | Tunisia, Mali, Mauritania, Egypt, Sudan, and Eritrea. Originally our goal was to include papers on deposits...the setting and origin of major deposits in the region, together with information on tonnages and grades...Northeast Africa, with a focus on deposits in Eritrea, Sudan, and Egypt. The second paper is by M. Bouabdellah...comparisons and contrasts with MVT deposits in the region. The last part is focused on sediment-hosted iron...Tunisia, and Comparisons with MVT Deposits in the Region . . . . . . . . . . 497 Sophie Decrée, Christian |  | Bierlein, F. P., McKeag, S., Reynolds, N., Bargmann, C. J., Bullen, W., Murphy, F. C., Al-Athbah, H., Brauhart, C., Potma, W., Meffre, S., McKnight, S. (2016) The Jebel Ohier deposit—a newly discovered porphyry copper–gold system in the Neoproterozoic Arabian–Nubian Shield, Red Sea Hills, NE Sudan. Mineralium Deposita, 51 (6) 713-724 doi:10.1007/s00126-015-0630-z | Journal (article/letter/editorial) | | principal localities and principal mines (1 Ariab, 2 Bisha, 3 Jebel Sayid, 4 Sukari) The Jebel Ohier mineralized...mineralized system is situated in a remote desert region some 300 km to the west-northwest of Port Sudan...Shield (ANS) in NE Africa, a geologically complex region with demonstrated pedigree for world-class orogenic...volcanic-hosted sulfide deposits (e.g., Ariab, Bisha, and Jebel Sayid; Fig. 1), but hitherto considered..., Cu, Fe) in pyrite and chalcopyrite. Low-Fe sphalerite (1.5–6 wt% Fe), galena and bornite, and rare |  | | Journal (article/letter/editorial) | | mineralization is primarily made up of chalcopyrite, sphalerite, pyrite, pyrrhotite, and magnetite. These minerals...Ethiopia. It is situated within the emerging mining region of the Arabian– Nubian Shield (ANS) that extends...pyrite and chalcopyrite with limited presence of sphalerite, galena, and pyrrhotite. Considerable amount...sulfide ores are predominantly chalcopyrite, sphalerite, galena, pyrite, and pyrrhotite. Gold and vast...minerals. The ore minerals pyrite, chalcopyrite, sphalerite, magnetite, galena, pyrrhotite, bornite, cubanite |  | | Journal (article/letter/editorial) | | geographic map, as well as the oldest geologic and mine map. The Fawakhir–El Sid district is part of a regional...veins includes pyrite-arsenopyrite-pyrrhotite-sphalerite-galena-chalcopyrite-electrum plus a number of...exploration activity, especially in Egypt, Arabia, Eritrea, and Ethiopia (Figure 1). Recent discoveries of...in Eritrea, and Tulu Kapi in Ethiopia, attest to a largely untapped gold potential in this region. Exploration...within the structural and thermal evolution of the region based on geochronological information, which is |  | | Journal (article/letter/editorial) | | amphibolite-facies metamorphism experienced in this region as a result of the 1.3–1.0 Ga Namaqua Orogeny and...fine-grained pyrite with minor chalcopyrite and sphalerite that show a close spatial association with the...interaction of a hot Cu-bearing fluid with Fe-bearing sphalerite (Eldridge et al., 1988), as well as the occurrence...pyrite (py) dominant sulfides, containing minor sphalerite (sp), chalcopyrite (ccp) and galena (gn) plus...(Fig. 2A and E) and rarely with py (Fig. 2B). Sphalerite is always anhedral, intergrown with gn and/or |  | Volesky, John C., Leybourne, Matthew I., Stern, Robert J., Peter, Jan M., Layton-Matthews, Daniel, Rice, Sarah, Johnson, Peter R. (2017) Metavolcanic host rocks, mineralization, and gossans of the Shaib al Tair and Rabathan volcanogenic massive sulphide deposits of the Wadi Bidah Mineral District, Saudi Arabia. International Geology Review, 59 (16) 1975-2002 doi:10.1080/00206814.2017.1307789 | Journal (article/letter/editorial) | | the Shwas mineral district east of WBMD, and the Bisha (Barrie et al. 2007) and Asmara mineral districts...stratabound lenses of pyrite, chalcopyrite, and sphalerite. These massive sulphide deposits have been known...minerals are pyrite and chalcopyrite with minor sphalerite, pyrrhotite, and magnetite. Sulphides are present...2005). Barite is a common gangue mineral and sphalerite is more common within the eastern side of the...subgroups: (1) massive sulphides (containing pyrite, sphalerite, and quartz) east and west of Wadi Bidah (note |  | | Journal (article/letter/editorial) | | particularly in NE Sudan, Asmara, and Western Eritrea (Barrie et al. 2007, 2016). These supergene Au...near-surface region above the Scuddles underground VMS deposit. Fig. 1 a Golden Grove Region in the Archaean...and pebble breccias and trace stringer pyrite ± sphalerite. The GG3 member has only been identified at the...massive sphalerite), Zn-Cu rich (> 5% chalcopyrite), and pyritic massive sulfides (< 50% sphalerite, < 5%...from bleached kaolinitic saprolite near Scuddles mine indicate an older weathering event assigned pre-late |  | | Journal (article/letter/editorial) | | tonnages, as an open pit operation will typically mine large tonnages at lower grades, illustrating the...are among the earliest formed VMS deposits in the region (Walker and McDonald 1995; Goodfellow 2003). The...0 La Zarza 9.1 Karkaralinski Abyz (Karaganda region, Kazakhstan) 205.0 Gai 50.0 107.0 Yubileinoe...quartz, Re realgar, Ru rutile, Sb stibnite, Sph sphalerite, Sr sericite, St staurolite, Td tetrahedrite...Group Belousov Kunduzdy Caribou Uzelg'a La Zarza Bisha Novo-Leninogorsk Horne - No. 5 Zone Kozmuran Jerome-United |  | | Journal (article/letter/editorial) | | deposit. Today, Sukari is the single major producing mine in US the Eastern Desert but many other significant...pyrrhotite, in addition to subordinate chalcopyrite, sphalerite, galenea and tetrahedrite as well as alteration...km from Sinai and eastern Egypt, through Sudan, Eritrea, and Ethiopia, and into Kenya (Fig. 1). Prior to...largescale open-pit and a high-grade underground mine. Franzmann et al (2015) report total T measured...underground operations in 2011. In 2012, the Sukari Gold Mine Co. mined 6.4 Mt of ore, processed 4.5 Mt of ore |  | | Book | | original volcanic chain, which ran partly where Bisha and Taif now stand, had been unroofed and worn down...parts remaining as dry land were the northwest, the region around Tabuk and perhaps some ground in the southwest...marine sedimentary rock. T 28 from the polar region and into warmer latitudes. The glaciers retreated...typical of the sedimentary strata in Central Pond Region. *7 4 yA * 7 ee poet*t! 262%" s* e** i a rr...Henceforward central and western Arabia were to be a region of erosion and denudation, of terrestrial sediments |  | Smith, C.W., Waters, B.C., Naqvi, M., Worl, R.G., Helaby, A.M., Flanigan, V.J., Sadek, H.S., Samater, R.M. (1983) Geological and geochemical studies in the Wadi Bidah District, Kingdom of Saudi Arabia. Open-File Report Vol. 1983 (83-672) US Geological Survey doi:10.3133/ofr83672 | Report (issue) | | THE B-24 ANOMALY AREA, KHAYAL AL MASNA'AH ANCIENT MINE................................. Geology..........PART OF THE B-24 ANOMALY AREA, MAHAWIYAH ANCIENT MINE.......................................... Geology..................... 62 63 63 64 MULHAL ANCIENT MINE..................................... 64 Geology...of airborne electromagnetic anomalies and ancient mine workings. ....... 4 Map of the northern part of...part of the B-24 anomaly area, Mahawiyah ancient mine. .................................... 53 Page |  | | Book | | Genesis of the Koka Gold Deposit in Northwest Eritrea, NE Africa: Constraints from Fluid Inclusions and...useful for revealing the geodynamic evolution of a region, and more effective for regional prospecting exploration...Genesis of the Koka Gold Deposit in Northwest Eritrea, NE Africa: Constraints from Fluid Inclusions and...evolution process of regional structures. This region is located within the southeastern margin of the...were significantly reworked during orogenies. The region witnessed migration and collision between the NCC |  | | Book (edition) | | Pyrite 11.3.19 Redon gas 11.3.20 Silica 11.3.21 Sphalerite 11.3.22 Talc 11.3.23 Uranium minerals 378 379...the mineral industry and human consequences 11.6.1 Mine waste catastrophe 11.6.2 Mineral process plant failure...Pyrrhotite Pyrite Quartz Sericite/sericitization Sphalerite Metals/semimetals/nonmetals Ag Al As At Au B...(Fe3Al2 (SiO4)3) Sulfide Chalcopyrite (CuFeS2), sphalerite (ZnS), galena (PbS), pyrite (FeS2), pyrrhotite...(Fe2O3), cassiterite (SnO2), chalcopyrite (CuFeS2), sphalerite (ZnS), galena (PbS), baryte (BaSO4 2H2O), gypsum |  | | Book (edition) | | Q Quartz S Sericite/seritic/sericitization Sp Sphalerite Metals/Semimetals/Nonmetals Ag Silver Al Aluminium...visit to zincelead polymetallic ore deposit, Megan Mine, Germany. Source: Ref. 24. 10 1. ROCKS AND MINERALS...schist host rock at Kolihan Section, Khetri Copper Mine, India. 1.3. MINERALS 11 FIGURE 1.23 Chromite...texture in calc-silicate host rock at Rajpura-Dariba Mine, India. Source: Prof. Martin Hale. chromium with...rhodochrosite (MnCO3), skutterudite (CoAs3; Fig. 1.28), sphalerite (ZnS; Fig. 1.29), stibnite (Sb2S3; Fig. 1.30) |  | | Report (issue) | | mineral commodities. The estimated value of U.S. metal mine production in 2017 was $26.3 billion (table 1),...Principal contributors to the total value of metal mine production in 2017 were gold (38%), copper (30%)... 9 TABLE 1.—U.S. MINERAL INDUSTRY TRENDS Total mine production (million dollars): Metals Industrial...BY STATE VALUE OF METALS PRODUCED IN 2017, BY REGION Au B3 P1 P1 Fe FeFe FeFe B5 Fe Fe B1 Au Northeast...VALUE OF INDUSTRIAL MINERALS PRODUCED IN 2017, BY REGION P IS EXPLANATION Value, in billion dollars <2 |  | | Book | | the arts is the proper focus of interest at every mine; that the operations converging on this point are...conditions The problem of ore treatment confronts every mine manager. Mining should be looked upon as a manufacturing...crushers that first take the ore as it comes from the mine (some of them can take 6-ft. cubes) are called COARSE...flow-sheet at a large mine has more steps and is more complicated than that at a small mine. Grade of ore. High-grade...The fact that the mill owner is also usually the mine owner is not sufficient insurance as to the adequacy |
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